Here are three essential tips for using the major pentatonic scale and mixing in minor notes to create more colorful solos:

Blend Major and Minor Pentatonic Scales:

Start by familiarizing yourself with both the major and minor pentatonic scales. For example, in the key of A, the major pentatonic scale is A-B-C#-E-F#, and the minor pentatonic scale is A-C-D-E-G.
When soloing, you can switch between these scales to add variety. For instance, you can start a phrase using the major pentatonic and resolve it with notes from the minor pentatonic.
Target the Blues Notes:

The blues note (or blue note) is a minor third (flattened third) in the major pentatonic scale and a flattened fifth in the minor pentatonic scale.
For the A major pentatonic scale, the blues note would be C (minor third). Adding this note to your major pentatonic phrases introduces a bluesy feel and adds emotional depth.
Experiment with sliding into or bending into these blues notes for expressive phrasing.
Use Chromatic Passing Tones:

Chromatic passing tones are non-diatonic notes that connect scale tones. They can create tension and release when used effectively.
In the context of mixing major and minor pentatonic scales, you can add chromatic notes between the major third and perfect fifth (C# to E in A major pentatonic) or between other scale degrees to smooth transitions between the major and minor sounds.
Practice incorporating these chromatic notes sparingly within your solos to maintain a balance between tension and resolution.
By blending the major pentatonic scale with minor notes and incorporating blues and chromatic elements, you'll be able to create more dynamic and expressive guitar solos.