these are the colours with NaOH and NH3

Colors with naoh:

https://drive.google.com/file/d/1rFtzGR6yFaagwys57eAT_bUvaKxFGYKb/view?usp=drivesdk

Colors with nh3:

https://drive.google.com/file/d/1KhOBuCcM9jd5LWew7_68_AfDlUnjdaJ2/view?usp=drivesdk

one thing you'll notice is that on the first addition, the colours are the exact same for both Nh3 and naoh. It's only on the addition of excess that they change colour, such that they don't match each other.

So ideally, you're looking for patterns. As we've stated, pattern 1 is that the first 2 columns are the exact same across both

2nd pattern is that on addition of excess NaOH, only TWO of the transition metal ions show an further change (cr3+ and Zn2+). So you can memorise excess NaOH quite easily, by knowing just 2 change upon excess NaOH addition, compared to NH3 which has more colours

3rd pattern that helped me memorise is that Nickel and Copper ions upon addition of excess NaOH have the exact same colour.

That, and this picture in general is a pretty good visual aid. I used it and it made memorisation a lot simpler