How to change EACH textbox COLOR?

Hi Sir Welvin!

I have another question regarding this timetable I made using text box..

Please tell me how can I change EACH text box COLOR.
I can only see the general color for all text boxes...

Please help...
I hope the sample format below...I can change any text box color...
Thank you so much in advance!
Here's my form link https://form.jotform.me/60953194166461

The easiest way to do so would be to open your form in the designer, click on the CSS tab, then double click on the box you wish to alter.  Single clicking will bring up all text boxes, double clicking on a box will bring up the ID for that box:

Set the background color for that specific field and you will be all set.  Here is a test copy of your form with a few changed:

https://form.jotform.com/60955097007964

YES!!! Thank you very much Sir David!
I am really happy for this!
I am going to explore it.

Have a blessed day!