Can I feed above the recommended amount specified if my plants are still hungry?
Feeding at the correct amount and they are still very light green and need more food.
Can I extend over the recommended amounts?
Usually auto varieties need LESS fertilizer and not more. Are you certain that your issues are not caused by nutrient lockout because of applying too much? Also, make sure your pH is correct as that can prevent the plant from uptaking nutrients properly.
No...you are just going to burn her eventually.
Plants arent Humans wich you can stuff until they explode.
The Bright Color might be a deficency or wrong care.
Do you have a diary for this grow by any chance? Any pictures? What are you growing? What are your nutes? What amount of nutes have you been giving them? What's your PH? What's your substrate? Are you growing indoors or out? Inquiring minds (and those of us who want to help you) want to know...