You could try The Console Tool. It's over in the Personal Project's part of the forum. If the game uses a pretty generic format for the graphics, you might be able to see them with the program

I'm not sure the old graphic editors like YY-CHr and TLP are going to be relevant much longer for newer games, because developers aren't as restricted for space like they used to be. They've been using plain textures and images for lots of things, where before they were in these packaged pixel formats that we could find with our editors pretty easily. The upside is that the more conventional the developers the get, the easier it is to get at their files--too bad this also means there's a lot less uniformity on how each developer handles their games now o_O