My quick research showed cost about $7.50 per LED tube with same form factor as the obsolete fluorescent tubes. Here is one web site that shows how to upgrade your lights using their parts.
Tag: upgrade
FIX: Apt-get fails to upgrade when in batch
apt-get -y install unattended-upgrades dpkg-reconfigure unattended-upgrades from : https://wiki.ubuntu.com/Security/Upgrades
Ramblings of a mad Admin
A recent hack of a network is discussed along with methods of prevention.