I've downlaoded many chipsets from the web.
I want to use them i my games but, when I've ass them into RPG Maker the lower layer get a color who not look like the normal layer color.
If I put some green gras on a map it just looks red toned.
When placed another thing like water on the grass, the grass is transpared in the water.
The upper layer looks normal but I can see the normal base/ lower layer.
The pink or whatever color you set is not the bg color.
Open the chipset in an editor(preferably Idraw3) and change the background color on the chipset to the color in the top left of the palette. That is the BG color preset. Change it to what ever you want.