res/values/colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <!-- BACKGROUND -->
    <color name="background_header">#F7F7F7</color>
    <color name="background">#F0F0F0</color>
    <color name="background_other_os_options">#E8E8E8</color>

    <!-- MAIN COLORS -->
    <color name="transparent">#00000000</color>
    <color name="white">#FFFFFF</color>
    <color name="white_transparent">#55FFFFFF</color>
    <color name="grey">#5b5b5b</color>
    <color name="grey_light">#999999</color>
    <color name="grey_dark">#333333</color>
    <color name="grey_transparent">#66999999</color>
    <color name="blue">#2AA9E0</color>
    <color name="blue_dark">#123C59</color>
    <color name="blue_light">#AADCF2</color>
    <color name="blue_light_transparent">#dbeaf0</color>
    <color name="green">#6BC1A3</color>
    <color name="green_dark">#17717A</color>
    <color name="green_light">#a0d7c4</color>
    <color name="green_light_transparent">#d8e8e2</color>
    <color name="pink">#c1454a</color>
    <color name="pink_dark">#823a3d</color>
    <color name="pink_light">#f286b6</color>
    <color name="pink_light_transparent">#f0dbe4</color>
    <color name="red">#c3474c</color>
    <color name="design_pink">#d7617f</color>

    <!-- GOOGLE COLORS (DEPENDENCIES) -->
    <color name="google_blue">#33b5e5</color>

</resources>