Hi Vishwa B R
From the button properties click on Appearance add a class and style it using CSS
So add a class for the data grid and you can reach the buttons let's assume the class name of the data grid is x so the CSS should be
.x > .mx-grid-searchbar > .mx-grid-search-controls > .mx-grid-search-button {
// type your design here
}
please if this does the job recommend this answer as accepted answer