It might seem fun to switch up the color or font, but it will only degrade the company’s brand and the likelihood that the logo will be immediately recognized. If you decide to rebrand with a new logo, make sure you make the transition all at once. Do not leave images of your old logo on your website or social media sites to compete with the new logo you are trying to introduce.
You may know better than to change a logo on a whim, but remember that you need to be able to reproduce the image reliably too. Does your in-house team have that ability?