How google identifies text colour and background? - colors

Google identifies the text colours from coding like if black it will be coded with #000000, and Google read this code and identifies that it is black colour,
However if colour in coding is black ie #000000, and with some other plugin I change it to white in appearance without changing coding.
In this condition Google can able to identify the difference between white and black text? or it will considered black as what in mention coding of text.

You can use Google Search Console to fetch and render. This will show you both what a normal browser can see and how Googlebot sees a page.

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Can a website section / div "sense" the colour or lightness of the background?

Designing websites I often want to use a colour or image as a background. This often involves changing the default colour of the text, or creating a semi-transparent text background to make the text readable.
Is there any way a website section or div can automatically sense what is happening in the page background and then adjust the colour, contrast or strength of the text to aid redability??
I asked a question here

Rollover hex code to show color thumbnail

Is there a setting where I can have the color thumbnail to show next to the color hexcode? Or is there a way in dreamweaver that I can quickly know the colors of the hexcode?
Sometimes when I rollover the hex code, it shows the color thumbnail but there are times when it is either veryyyyy slow to popup or it doesn't show at all. */This can chew some nerves./*
Is it due to a certain setting I missed or it is a by default behaviour? How can I have it show right next to the hex code?
You are working in the code view? Usually when you select the hex code in the stylesheet it will give you a quick view (thumbnail/icon) of the color, and even allow you to alter it.

IS Google ignoring white text with dark background?

My Website iascoachingindia.in have some coloured boxes with white text on, however background colour is dark and clearly visible to human eye, but I felt Google proffered text which is black in text with white background.
Please anybody have some experienced in the same??
Google can crawl and index all the fonts and color, but the most important thing is to avoid make it spammy by adding the same font color with the same background color.
Also if its with the same color, still Google can access them and index them but you will get a penalty.

Converting Google Docs entire document area for true dark background usage

I can see that I am able to change the background color for my Google Docs document through the page settings. If I choose a dark color such as black, I then notice that I have to manually adjust the text color to something light like white...but that still doesn't change the ticker to white (which shows me where my current typing position is located in the document). The ticker is still black.
How do we change the ticker to white as well...?
I have made a whole theme for Google Docs and Google Translate through userscripts recently, so it's more pleasant for eyes mostly at night. No need to change page background or font color, therefore you can use the default settings and print it without modifying anything. :-)

Chrome Extension Badge - Text Color

A quick question regarding the Chrome Badge/Browser Action API.
Is there a method to set the badge text colour? (much like you can with the back colour).
I'm sure I remember seeing a reference to a method such as SetBadgeTextColor() somewhere on the Internet (not sure where, mind).
Edit: Chromium Wiki - Browser Actions Proposal
The link above is where I saw a method to set the badge text colour. Was this proposal ever implemented?
You cannot change the text color directly.
What you can do is to paint the base image on a canvas, then draw the text using your desired color and finally use chrome.browserAction.setIcon to update the badge.
chrome ext detects badge bg color (light or dark) and set text color automatically (black or white). if your background color is around the boundary of those. try to increase or decrease your bg color code e.g your bg color is red #FF0000 then chrome will detects it as light but when you decrease the color code hex to #FE0000 it will detected as dark, and it's still solid red in our eyes

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