diff --git a/cmds/bootanimation/BootAnimation.cpp b/cmds/bootanimation/BootAnimation.cpp
index 929e63e..6e27aff 100644
--- a/cmds/bootanimation/BootAnimation.cpp
+++ b/cmds/bootanimation/BootAnimation.cpp
@@ -107,13 +107,9 @@
 static const char DISPLAYS_PROP_NAME[] = "persist.service.bootanim.displays";
 static const int ANIM_ENTRY_NAME_MAX = ANIM_PATH_MAX + 1;
 static constexpr size_t TEXT_POS_LEN_MAX = 16;
-static const int DYNAMIC_COLOR_COUNT = 4;
 static const char U_TEXTURE[] = "uTexture";
 static const char U_FADE[] = "uFade";
 static const char U_CROP_AREA[] = "uCropArea";
-static const char U_START_COLOR_PREFIX[] = "uStartColor";
-static const char U_END_COLOR_PREFIX[] = "uEndColor";
-static const char U_COLOR_PROGRESS[] = "uColorProgress";
 static const char A_UV[] = "aUv";
 static const char A_POSITION[] = "aPosition";
 static const char VERTEX_SHADER_SOURCE[] = R"(
@@ -125,28 +121,6 @@
         gl_Position = aPosition;
         vUv = aUv;
     })";
-static const char IMAGE_FRAG_DYNAMIC_COLORING_SHADER_SOURCE[] = R"(
-    precision mediump float;
-    uniform sampler2D uTexture;
-    uniform float uFade;
-    uniform float uColorProgress;
-    uniform vec4 uStartColor0;
-    uniform vec4 uStartColor1;
-    uniform vec4 uStartColor2;
-    uniform vec4 uStartColor3;
-    uniform vec4 uEndColor0;
-    uniform vec4 uEndColor1;
-    uniform vec4 uEndColor2;
-    uniform vec4 uEndColor3;
-    varying highp vec2 vUv;
-    void main() {
-        vec4 mask = texture2D(uTexture, vUv);
-        vec4 color = mask.r * mix(uStartColor0, uEndColor0, uColorProgress)
-            + mask.g * mix(uStartColor1, uEndColor1, uColorProgress)
-            + mask.b * mix(uStartColor2, uEndColor2, uColorProgress)
-            + mask.a * mix(uStartColor3, uEndColor3, uColorProgress);
-        gl_FragColor = vec4(color.x, color.y, color.z, (1.0 - uFade)) * color.a;
-    })";
 static const char IMAGE_FRAG_SHADER_SOURCE[] = R"(
     precision mediump float;
     uniform sampler2D uTexture;
@@ -154,7 +128,7 @@
     varying highp vec2 vUv;
     void main() {
         vec4 color = texture2D(uTexture, vUv);
-        gl_FragColor = vec4(color.x, color.y, color.z, (1.0 - uFade)) * color.a;
+        gl_FragColor = vec4(color.x, color.y, color.z, 1.0 - uFade);
     })";
 static const char TEXT_FRAG_SHADER_SOURCE[] = R"(
     precision mediump float;
@@ -252,10 +226,6 @@
     outInfo->stride = AImageDecoder_getMinimumStride(decoder);
     outInfo->flags = 0;
 
-    // Set decoding option to alpha unpremultiplied so that the R, G, B channels
-    // of transparent pixels are preserved.
-    AImageDecoder_setUnpremultipliedRequired(decoder, true);
-
     const size_t size = outInfo->stride * outInfo->height;
     void* pixels = malloc(size);
     int result = AImageDecoder_decodeImage(decoder, pixels, outInfo->stride, size);
@@ -705,12 +675,9 @@
 }
 
 void BootAnimation::initShaders() {
-    bool dynamicColoringEnabled = mAnimation != nullptr && mAnimation->dynamicColoringEnabled;
     GLuint vertexShader = compileShader(GL_VERTEX_SHADER, (const GLchar *)VERTEX_SHADER_SOURCE);
     GLuint imageFragmentShader =
-        compileShader(GL_FRAGMENT_SHADER, dynamicColoringEnabled
-            ? (const GLchar *)IMAGE_FRAG_DYNAMIC_COLORING_SHADER_SOURCE
-            : (const GLchar *)IMAGE_FRAG_SHADER_SOURCE);
+        compileShader(GL_FRAGMENT_SHADER, (const GLchar *)IMAGE_FRAG_SHADER_SOURCE);
     GLuint textFragmentShader =
         compileShader(GL_FRAGMENT_SHADER, (const GLchar *)TEXT_FRAG_SHADER_SOURCE);
 
@@ -725,22 +692,6 @@
     glVertexAttribPointer(uvLocation, 2, GL_FLOAT, GL_FALSE, 0, quadUVs);
     glEnableVertexAttribArray(uvLocation);
 
-    if (dynamicColoringEnabled) {
-        glUseProgram(mImageShader);
-        SLOGI("[BootAnimation] Dynamically coloring boot animation.");
-        for (int i = 0; i < DYNAMIC_COLOR_COUNT; i++) {
-            float *startColor = mAnimation->startColors[i];
-            float *endColor = mAnimation->endColors[i];
-            glUniform4f(glGetUniformLocation(mImageShader,
-                (U_START_COLOR_PREFIX + std::to_string(i)).c_str()),
-                startColor[0], startColor[1], startColor[2], 1 /* alpha */);
-            glUniform4f(glGetUniformLocation(mImageShader,
-                (U_END_COLOR_PREFIX + std::to_string(i)).c_str()),
-                endColor[0], endColor[1], endColor[2], 1 /* alpha */);
-        }
-        mImageColorProgressLocation = glGetUniformLocation(mImageShader, U_COLOR_PROGRESS);
-    }
-
     // Initialize text shader.
     mTextShader = linkShader(vertexShader, textFragmentShader);
     positionLocation = glGetAttribLocation(mTextShader, A_POSITION);
@@ -918,20 +869,6 @@
     return true;
 }
 
-// Parse a color represented as a signed decimal int string.
-// E.g. "-2757722" (whose hex 2's complement is 0xFFD5EBA6).
-// If the input color string is empty, set color with values in defaultColor.
-static void parseColorDecimalString(const std::string& colorString,
-    float color[3], float defaultColor[3]) {
-    if (colorString == "") {
-        memcpy(color, defaultColor, sizeof(float) * 3);
-        return;
-    }
-    int colorInt = atoi(colorString.c_str());
-    color[0] = ((float)((colorInt >> 16) & 0xFF)) / 0xFF; // r
-    color[1] = ((float)((colorInt >> 8) & 0xFF)) / 0xFF; // g
-    color[2] = ((float)(colorInt & 0xFF)) / 0xFF; // b
-}
 
 static bool readFile(ZipFileRO* zip, const char* name, String8& outString) {
     ZipEntryRO entry = zip->findEntryByName(name);
@@ -1073,8 +1010,6 @@
         return false;
     }
     char const* s = desString.string();
-    std::string dynamicColoringPartName = "";
-    bool postDynamicColoring = false;
 
     // Parse the description file
     for (;;) {
@@ -1093,13 +1028,7 @@
         char color[7] = "000000"; // default to black if unspecified
         char clockPos1[TEXT_POS_LEN_MAX + 1] = "";
         char clockPos2[TEXT_POS_LEN_MAX + 1] = "";
-        char dynamicColoringPartNameBuffer[ANIM_ENTRY_NAME_MAX];
         char pathType;
-        // start colors default to black if unspecified
-        char start_color_0[7] = "000000";
-        char start_color_1[7] = "000000";
-        char start_color_2[7] = "000000";
-        char start_color_3[7] = "000000";
 
         int nextReadPos;
 
@@ -1114,15 +1043,6 @@
             } else {
               animation.progressEnabled = false;
             }
-        } else if (sscanf(l, "dynamic_colors %" STRTO(ANIM_PATH_MAX) "s #%6s #%6s #%6s #%6s",
-            dynamicColoringPartNameBuffer,
-            start_color_0, start_color_1, start_color_2, start_color_3)) {
-            animation.dynamicColoringEnabled = true;
-            parseColor(start_color_0, animation.startColors[0]);
-            parseColor(start_color_1, animation.startColors[1]);
-            parseColor(start_color_2, animation.startColors[2]);
-            parseColor(start_color_3, animation.startColors[3]);
-            dynamicColoringPartName = std::string(dynamicColoringPartNameBuffer);
         } else if (sscanf(l, "%c %d %d %" STRTO(ANIM_PATH_MAX) "s%n",
                           &pathType, &count, &pause, path, &nextReadPos) >= 4) {
             if (pathType == 'f') {
@@ -1135,16 +1055,6 @@
             //       "clockPos1=%s, clockPos2=%s",
             //       pathType, count, pause, path, framesToFadeCount, color, clockPos1, clockPos2);
             Animation::Part part;
-            if (path == dynamicColoringPartName) {
-                // Part is specified to use dynamic coloring.
-                part.useDynamicColoring = true;
-                part.postDynamicColoring = false;
-                postDynamicColoring = true;
-            } else {
-                // Part does not use dynamic coloring.
-                part.useDynamicColoring = false;
-                part.postDynamicColoring =  postDynamicColoring;
-            }
             part.playUntilComplete = pathType == 'c';
             part.framesToFadeCount = framesToFadeCount;
             part.count = count;
@@ -1176,12 +1086,6 @@
         s = ++endl;
     }
 
-    for (int i = 0; i < DYNAMIC_COLOR_COUNT; i++) {
-        parseColorDecimalString(
-            android::base::GetProperty("persist.bootanim.color" + std::to_string(i + 1), ""),
-            animation.endColors[i], animation.startColors[i]);
-    }
-
     return true;
 }
 
@@ -1453,14 +1357,6 @@
             for (size_t j=0 ; j<fcount ; j++) {
                 if (shouldStopPlayingPart(part, fadedFramesCount, lastDisplayedProgress)) break;
 
-                // Color progress is
-                // - the normalized animation progress between [0, 1] for the dynamic coloring part,
-                // - 0 for parts that come before,
-                // - 1 for parts that come after.
-                float colorProgress = part.useDynamicColoring
-                    ? (float)j / fcount
-                    : (part.postDynamicColoring ? 1 : 0);
-
                 processDisplayEvents();
 
                 const int animationX = (mWidth - animation.width) / 2;
@@ -1480,7 +1376,19 @@
 
                 const int xc = animationX + frame.trimX;
                 const int yc = animationY + frame.trimY;
-                glClear(GL_COLOR_BUFFER_BIT);
+                Region clearReg(Rect(mWidth, mHeight));
+                clearReg.subtractSelf(Rect(xc, yc, xc+frame.trimWidth, yc+frame.trimHeight));
+                if (!clearReg.isEmpty()) {
+                    Region::const_iterator head(clearReg.begin());
+                    Region::const_iterator tail(clearReg.end());
+                    glEnable(GL_SCISSOR_TEST);
+                    while (head != tail) {
+                        const Rect& r2(*head++);
+                        glScissor(r2.left, mHeight - r2.bottom, r2.width(), r2.height());
+                        glClear(GL_COLOR_BUFFER_BIT);
+                    }
+                    glDisable(GL_SCISSOR_TEST);
+                }
                 // specify the y center as ceiling((mHeight - frame.trimHeight) / 2)
                 // which is equivalent to mHeight - (yc + frame.trimHeight)
                 const int frameDrawY = mHeight - (yc + frame.trimHeight);
@@ -1496,9 +1404,6 @@
                 glUseProgram(mImageShader);
                 glUniform1i(mImageTextureLocation, 0);
                 glUniform1f(mImageFadeLocation, fade);
-                if (animation.dynamicColoringEnabled) {
-                    glUniform1f(mImageColorProgressLocation, colorProgress);
-                }
                 glEnable(GL_BLEND);
                 drawTexturedQuad(xc, frameDrawY, frame.trimWidth, frame.trimHeight);
                 glDisable(GL_BLEND);