transparency

How to make a color transparent in Gimp

I was recently working on some images of a mobile phone, where the mobile phone was surrounded by a solid color that I wanted to make transparent. Unfortunately the phone was black, and that color was dark gray, so when I made the dark gray a transparent color in Gimp using my usual approach — clicking Colors > Color to Alpha, then choosing dark gray — it had the effect of bleeding a lot of color out of the black phone. This was wrong.

How to make a rounded rectangle in GIMP

I recently needed to make an icon look like an iOS style app icon -- a rounded rectangle with transparent corners -- and to do that I needed to learn how to create a rounded rectangle in Gimp. This tutorial contains a short step-by-step description of how to do this.

Note: I’m writing this tutorial in April, 2015, using Gimp 2.8.

Transparent JFrame - How to make a JFrame transparent on Mac OS X

Summary: How to make a Java JFrame transparent (translucent) on Mac OS X.

A lot of people complain about a lot of things in regards to Java on Apple's Mac OS X platform, and okay, occasionally I'm one of them, but a very cool thing you can do on OS X is to create translucent (transparent) frames and windows with Java.