plant colour too light?

Keep your diaries up-to-date! They provide essential information when we want to try to help other growers out... I'm not concerned about the color or the stretching... both are most likely due to their being in a window rather than under good grow lights so that ought to change here quickly. What I AM concerned about is that you've chosen to start autoflowers in a small pot with, I assume, the intention of transplanting them into a larger pot somewhere down the road. I caution you to be VERY careful when you do that so as to not disturb the roots. Autoflowers dislike any amount of high stress and transplanting is definitely high stress for them. Autos should always be started in the pot they're going to finish in. When you DO transplant, make sure the soil they're going into has a lot of perlite in it... oxygen is terribly important to the roots. You can help them out now by adding a small amount (1/2 tsp?) of 3% H2O2 to your water when you water them... This also ought to help them "green up" as it gives those roots extra oxygen. Make sure your soil is completely dry between waterings or you will end up overwatering them and that kills more plants than anything else. Don't feed them until they're about 3 weeks old and when you start feeding, use only about 1/2 strength nutes to make sure they're going to be tolerated. If they ARE tolerated, then you can increase the dosage the next week - and by that time, they ought to be in pre-flower so you can start adding bloom nutes. Autos rarely if ever require or tolerate the full dosage recommended by any nute manufacturer... those guys don't make their recommendations or set up their feeding schedule with autoflowers in mind - ever. So go gently. Good luck!

Color is effected by the pH being off and roots not able to absorb the nutrients. Roots need air as much as water and nutrients. Is why a good amount of perlite is ideal and or coco in substrate. They both hold air. It will improve resistance to over watering as well the more you put in the mix.

At this stage they need very little water. Also you’re in what looks like a small pot so it will be even harder regulate the water properly. I use 3 gallon pots with ocean forest soil which comes with perlite in it. Then I add extra. I mix my soil so it’s 75% soil(with perlite already in it) and then 25% perlite. After treating the pot initially with about 1/2 a gallon of water I don’t water again for about 10 days. I will only mist the top of the soil at this early stage to prevent it from dying out. But you need to let soil completely dry out between waters. Less is more at this stage. And yes that is definitely why your plant is stretching. Get her under that light asap.

thanks for your advice. i actually wanted to flush this and the other plant bc the ph is still too high but i think ill just leave them for now. yes i wanted to buy soil with perlite but i got persuaded by a family member not to do that and ive realized sooner that i shouldve just bought the one with perlite... other than that i pack the soil pretty lightly and water seems to drain just fine idk. in a matter of days the soil is pretty medium, like not dry not soaked but still kinda wet. idk but ill buy more soil with perlite next... also the stretching could be due to the fact that i didnt have ANY growlight before. just a window and the outside sunlight so they were stretchy before i got the growlight at all lol... growlight rn is a guessed 35cm above the plant btw.

Looking at your plant it looks a bit overwatered. This could be due to your medium. It looks like there is little to no perlite in your soil, which could lead to very poor drainage, and eventually strangle the roots. They need to breathe. I’d recommend cutting down on watering and let that medium completely dry out. Also the stretching of your plant means it needs more light! I know you said you just got a new light, but get that plant closer to prevent further stretching.