I see most people use a black and white academic CV. Will it be any problem
if I use a color CV like this template, which is mostly monochrome but uses blue in some places.
(I am applying for Graduate admission)
The general advice is that CVs should be outstanding because of their content while their form should be relatively dull-to-boring.
The example you link to has very subtle use of color (a dark blue for headings) and is tolerable. However, you still run the risk running into faculty with the perception that:
For those reasons, it's safest to go with a boring CV style and work on building content instead. This is generic advice for both graduate admissions as well as academic job searches.
If you do use a color CV make sure it still looks good when printed monochrome! Some people on the committee will prefer to read hard copies, and in all likelihood they will be printed in monochrome.
The content is the most important thing on a CV.
That said, those reading your CV will be reading many others, and you want to do everything possible to make your CV readable, but also make it stand out.
If you can use color in a professional way that makes important stuff stand out, it is my opinion that you should go for it! Just make sure your colors do not stand out too much against the rest of the text. (Bright red and black on white paper doesn't look good, but black and a gray-blue theme could go well.) Some color palettes are better than others, and different palettes might go better with different fonts or layouts.
Make your design simple (so as to not distract from your accomplishments), easy-to-read (to make the document easier to skim), and visually attractive (to make it stand out from all the other CVs). Choose a color that enhances these qualities.
I would also caution against using more than one color, unless you really know what you're doing and/or graphic design is part of the job you are applying for.
moderncv class is the left-justified Times New Roman of CVs in LaTeX.
It looks good, uses color reasonably, and has well-engineered defaults, so don't worry about issues when printing in black or white.
It is a very popular package; for sure, everyone who has ever had to scan an academic CV in a scientific field has already seen a CV formatted to look exactly like yours. This isn't a bad thing in my view: it is unlikely to attract negative attention. As for attracting positive attention, generally you want to do that with the content of your CV, not with its unusual formatting. :)
In my point if view, a CV with colors is for digital viewing purposes. For instance, I usually color links in my CV for a person who views it in a PDF viewer to be able to click on the links.
However, if darker colors are chosen (such as navy blue or brick red), it would not cause any problems when printed grayscale. However, if one chooses to use colors like bright green, then the links (or references) will be printed obscure.
I agree with most of the replies given above. Most of the PIs use hard copies of applications while doing a video or phone interview with you and that is when they will look for specific points to frame a question for you. As such having a CV with black font is better. You can always use differences in font sizes for topics, sub-topics and text such that it becomes easily readable.
Overall the template you show doesn't look too bad but a darker blue would reduce the risk of bad copies.