private void updateCurColor() {
        if (mAlpha < 255) {
            mCurTrackColor = Ui.modulateColorAlpha(mTrackColor, mAlpha);
            mCurScrubberColor = Ui.modulateColorAlpha(mScrubberColor, mAlpha);
            mCurThumbColor = Ui.modulateColorAlpha(mThumbColor, mAlpha);
        } else {
            mCurTrackColor = mTrackColor;
            mCurScrubberColor = mScrubberColor;
            mCurThumbColor = mThumbColor;
        }
    }
Update tint color

@param state tint stats
@return is changed
caprice/ui/src/main/java/net/qiujuer/genius/ui/drawable/SeekBarStateDrawable.java