Red laser light with wavelength \(\lambda_{\text{red}} = 650\text{ nm}\) passes through a single slit of width \(a\) and forms a diffraction pattern on a screen located at a distance \(L\) from the slit. The red laser is then replaced by a blue laser with wavelength \(\lambda_{\text{blue}} = 450\text{ nm}\) passing through the same slit at the same distance. How does the width of the central bright maximum on the screen change, and why?