On saturday, I'll be fishing a new lake that is nodded for their excellent bass population. The water clarity is 10 feet, max depth is 30 feet, lots of rocks. What would be good to use, colors, baits? Thanks.

I don't know exactly where you are at in MN but weather conditions are going to be pretty similar across the state I think.  Find sand/hard shorelines that have newly developing curly leaf/broad leaf cabbage coming up where you have a bottom transition from sand to muck and you'll find some there.  Fish smaller baits...tubes, 4" worms, 4" Zoom fluke or Lunker City Fin S Fish or 3" mullet type baits on light line.  Try the Fin S Fish/Flukes unweighted and also with maybe 1/16 oz bullets.  Plan on fishing slow because you are likely dealing with 2nd day post frontal conditions.  Fish that transition zone or just back into the weeds a bit.  You might also find some fish on deeper edges but again I don't think they will be in a chasing mood so fish slow.

I will be fishing this same pattern on Sunday in a very clear lake also.  I will be using all those baits mentioned.  The Fin S Fish in rainbow trout has been kick butt this year so far for me.  One of my best colors for post frontal conditions on clear water is Clear Salt and pepper or Clear with silver flake.  When the bite is tough I can almost always count on that color.

Use whatever weight you have to keep a good feel of the bottom.  Sometimes you'll encounter wood in those weeds that has been blown in over the years and sitting on the bottom.  You start knocking your Fluke or tube into that wood and you'll get bit.