2001 Saturn L200

Thats strange they only flushed ur coolant for a coolant light u probably have a coolant leak thats why ur light is back on or they didnt bleed all the air out ur coolant when they flushed it. Also the coolant isnt red transmission fluid is and without know where its comming from I really could say how much the repair would cost.U could have two problems with the coolant light on and that trans fluid leaking.I would bring it back and ask them why they only flushed it with the coolant light on and why the lights back on after flushing it. Let me know what they find.