Hi,
Ok, so when I choose a color to use, and I decide to pick another color, Photoshop will not allow me to use the first color I used if I wanted to. For example: i start with pale blue, then move to red, then I want to use the pale blue again so I eyedrop the pale blue, but when I use the brush tool or shape tool it comes out a shade darker. I try again, it comes out a shade even darker.
I've been using photoshop for a while, and I've never experienced this. I don't know what's going on, and why the colors are acting this way. I've checked the Mode, the layer styles, the opacites, any filters or adjustments I may have accidentally put on.....nothing....WHAT IS HAPPENING?!?!
Help would be most appreciated 
Thanks!
-Forrest