To change the color of images or maps to Grayscale, Sepia, Saturation, Blur, Invert like this:

You can use the ‘Filters’ option on the design tab of Divi modules.

Or use CSS like this. Change the values in the parentheses () to achieve different levels of these effects.

-webkit-filter: grayscale(1);
filter: grayscale(1);

-webkit-filter: sepia(1);
filter: sepia(1);

-webkit-filter: saturate(2);
filter: saturate(2);

-webkit-filter: blur(5px);
filter: blur(5px);

-webkit-filter: invert(1);
filter: invert(1);