Here are my "go to" work appropriate MAC eyeshadow colors that I use on most (almost all actually) week days. They retail for $14.50 in a pot, or you can buy refill pans for $11.
5) MAC Espresso - Muted golden brown (Matte)
4) MAC Cork - Muted golden brown (Satin)
3) MAC Texture - Peachy-brown with shimmer (Velvet)
2) MAC Grain - Golden beige with icy shimmer(Satin) OR MAC Arena Soft gold-peach with pearl (Satin)
1) MAC Brule - Soft creamy-beige (Satin) OR MAC Bamboo Light beige with peach (Matte)
5) MAC Espresso - Muted golden brown (Matte)
4) MAC Cork - Muted golden brown (Satin)
3) MAC Texture - Peachy-brown with shimmer (Velvet)
2) MAC Grain - Golden beige with icy shimmer(Satin) OR MAC Arena Soft gold-peach with pearl (Satin)
1) MAC Brule - Soft creamy-beige (Satin) OR MAC Bamboo Light beige with peach (Matte)