Modifying Source Code of an Indicator

Hey Guys, I have an Indicator I call ‘Timezone’. It highlights a particular time period on a chart. For instance, from 00:00 to 08:00. I’ve attached the screenshot below and as you can see it changes the vertical grid color within the box to Red. Now, Since I don’t know much about the coding and stuff, I was hoping someone would help me out and modify the source code so the grid color doesn’t changes. It stays whatever user has selected in Chart Properties, just like the horizontal lines.

Thanks in advance!!