Understanding colors on Android (six characters)

I am trying to understand how colors work in Android. I have this color set as the background of my LinearLayout, and I get a background gray with some transparency: <gradient android:startColor=”#b4555555″ android:endColor=”#b4555555″ android:angle=”270.0″ /> If I remove the last two characters (55) I get a solid color, losing the transparency. I was trying to … Read more