Color classic motherboard
Welcome to the color classic world.
First realize that is over a decade old. The motherboard has electrolyte capacitors on it that are most likely bad, along with the battery (which you should remove if you already haven't before it explodes and corrodes the motherboard)
Now the good news, with some elbow grease and some skill that you can learn with a starter kit at RadioShack you can fix it (buy the capacitors needed online somewhere)
First clean the motherboard. Ill probably get flame sprayed but thie process that works for me is to wash in the dishwasher, then scrub in sink with soap and water with a soft bristle toothbrush and wash again with heated dry on and let dry. That way it's ready to remove the old capacitors and resolder.
The capacitors are SMD (surface mounted). They look like little cans. Take the numbers down most will be 47uf 16v (volt). Replace those and most likely your Mac will be back to normal unless the scsi hard drive died also due to age.
Good luck.