Art surface problem (Again)

[TheRoot]

Hello, a few weeks ago I had the problem in my mod Could Not create art surface (some users with weaker pc had this problem) Anyway, after using the tool of genius, A-man, diminishes the tables and the problem solved .. however, with the launch new versions of the problem returned and I realized that if you change the color system to 16-bit, these people can play quietly. Unfortunately some sprites along strange bugs completely changes its color. Is there any way to fix this? I tried to save bmp in 16 bit and still did not work out :/