interior areas too dark

[basspumpkins]

Hi,

I'm a newbie at using the toolset and I'm having a problem creating interior areas. When I bring up the area, it's all black with the red lines showing the blocks. When I go to add a tile, I can hardly see the tile at all. I've tried changing the tint and color and it's still way too dark to see what I'm doing. Is there something I'm doing wrong? Is there an option to add lighting?

Thanks for any help,

basspumpkins